Published January 2011 | Version v1
Journal article Metadata-only

A sol-gel method for growing superconducting MgB2 films

Creators

  • 1. State Key Laboratory for Artificial Structure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China)
  • 2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China)

Description

In this paper we report a new sol-gel method for the fabrication of MgB2 films. Polycrystalline MgB2 films were prepared by spin-coating a precursor solution of Mg(BH4)2 diethyl ether on (001)Al2O3 substrates followed with annealing in Mg vapor. In comparison with the MgB2 films grown by other techniques, our films show medium qualities including a superconducting transition temperature of TC ∼ 37 K, a critical current density of JC(5 K, 0 T) ∼ 5 x 106 A cm-2, and a critical field of HC2(0) ∼ 19 T. Such a sol-gel technique shows potential in the commercial fabrication of practically used MgB2 films as well as MgB2 wires and tapes.

Availability note (English)

Available from http://dx.doi.org/10.1088/0953-2048/24/1/015002

Additional details

Identifiers

DOI
10.1088/0953-2048/24/1/015002;
PII
S0953-2048(11)62570-0;

Publishing Information

Journal Title
Superconductor Science and Technology
Journal Volume
24
Journal Issue
1
Journal Page Range
[5 p.]
ISSN
0953-2048
CODEN
SUSTEF

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42066164
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CRITICAL CURRENT; ETHYL ETHER; FABRICATION; MAGNESIUM BORIDES; POLYCRYSTALS; SOL-GEL PROCESS; SUBSTRATES; SUPERCONDUCTING FILMS; SUPERCONDUCTING WIRES; TRANSITION TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BORIDES; BORON COMPOUNDS; CRYSTALS; CURRENTS; ELECTRIC CURRENTS; ETHERS; FILMS; MAGNESIUM COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; WIRES